Issued Patents All Time
Showing 26–50 of 75 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8045874 | Image forming apparatus and image density control method | Akira Yoshida, Shin Hasegawa, Hitoshi Ishibashi, Yoshiaki Miyashita, Kohta Fujimori +3 more | 2011-10-25 |
| 8027605 | Image forming apparatus and image density control method | Shin Hasegawa, Hitoshi Ishibashi, Shuji Hirai, Kohta Fujimori, Kayoko Tanaka +2 more | 2011-09-27 |
| 8009997 | Toner replenishment determination device of an image forming apparatus | Osamu Ariizumi, Kazumi Kobayashi, Shinji Kobayashi, Fukutoshi Uchida, Takashi Enami +8 more | 2011-08-30 |
| 7929873 | Image forming apparatus and image density control method | Shin Hasegawa, Hitoshi Ishibashi, Shuji Hirai, Kohta Fujimori, Kayoko Tanaka +4 more | 2011-04-19 |
| 7903986 | Reuse method and a reusable device for an image forming apparatus having a first process linear velocity and a second image processing apparatus having a second process linear velocity | Kayoko Tanaka, Shin Hasegawa, Hitoshi Ishibashi, Shuji Hirai, Kohta Fujimori +2 more | 2011-03-08 |
| 7885556 | Image forming apparatus for correcting a toner density target value | Kohta Fujimori, Shin Hasegawa, Hitoshi Ishibashi, Yushi Hirayama, Naoto Watanabe +8 more | 2011-02-08 |
| 7881629 | Image forming apparatus and image density control method | Hitoshi Ishibashi, Kohta Fujimori, Kayoko Tanaka, Yushi Hirayama, Naoto Watanabe | 2011-02-01 |
| 7821677 | Method and apparatus for image forming capable of accurately detecting displacement of transfer images and image density | Kayoko Tanaka, Kohta Fujimori, Shin Hasegawa, Shinji Kato, Naoto Watanabe +8 more | 2010-10-26 |
| 7809322 | Image forming apparatus and process cartridge therefore having a cleaner section which stores unused developer | Nobuo Iwata, Satoshi Muramatsu, Junichi Matsumoto, Takayuki Koike, Eriko Maruyama | 2010-10-05 |
| 7809291 | Image forming apparatus with a two component developer, toner density detection and toner density correction | Shinji Kato, Shin Hasegawa, Kouta Fujimori, Kayoko Tanaka, Yushi Hirayama +3 more | 2010-10-05 |
| 7778560 | Image forming apparatus and method of adjusting charge bias | Hitoshi Ishibashi, Kohta Fujimori, Shin Hasegawa, Yushi Hirayama, Shinji Kato +5 more | 2010-08-17 |
| 7747182 | Image forming apparatus with toner density control | Shinji Kato, Shin Hasegawa, Kohta Fujimori, Kayoko Tanaka, Yushi Hirayama +3 more | 2010-06-29 |
| 7672602 | Developing unit and image forming apparatus which forces consumption of toner | Osamu Ariizumi, Kazumi Kobayashi, Shinji Kobayashi, Fukutoshi Uchida, Takashi Enami +8 more | 2010-03-02 |
| 7668471 | Image forming apparatus and image forming method | Shin Hasegawa, Kohta Fujimori, Kayoko Tanaka, Yushi Hirayama | 2010-02-23 |
| 7664413 | Image forming device including a toner pattern forming unit | Kazumi Kobayashi, Kohta Fujimori, Shin Hasegawa, Takashi Enami, Kiichirou Shimizu | 2010-02-16 |
| 7631639 | Oil separator for blowby gas | Minoru Yonebayashi, Shigeki Yasuhara, Kaoru Ito, Toshimitsu Tanaka | 2009-12-15 |
| 7616909 | Image forming apparatus and image forming method | Shinji Kato, Shin Hasegawa, Hitoshi Ishibashi, Kohta Fujimori, Osamu Ariizumi +8 more | 2009-11-10 |
| 7551862 | Developing device, and process unit and image forming apparatus using the developing device | Kayoko Tanaka, Shin Hasegawa, Kohta Fujimori, Yushi Hirayama | 2009-06-23 |
| 7551864 | Image forming apparatus and method of controlling an image quality | Kohta Fujimori, Yuushi Hirayama, Shinji Kato, Kayoko Tanaka, Kazumi Kobayashi +3 more | 2009-06-23 |
| 7548704 | Image forming apparatus effectively conducting a process control | Shin Hasegawa, Shinji Kato, Hitoshi Ishibashi, Kohta Fujimori, Naoto Watanabe +8 more | 2009-06-16 |
| 7536121 | Image forming apparatus and image density control method | Kiichirou Shimizu, Shinji Kato, Shin Hasegawa, Kohta Fujimori, Yushi Hirayama +3 more | 2009-05-19 |
| 7515844 | Image density control method and image forming apparatus | Kayoko Tanaka, Kohta Fujimori, Yuji Hirayama, Shin Hasegawa, Shinji Kato +3 more | 2009-04-07 |
| 7512364 | Image forming apparatus including a developer replenishing device for a two-ingredient type developer | Satoshi Muramatsu, Nobuo Iwata, Junichi Matsumoto, Takayuki Koike, Eriko Maruyama | 2009-03-31 |
| 7493058 | Image forming apparatus and toner concentration controlling method | Shin Hasegawa, Kohta Fujimori, Kayoko Tanaka, Yushi Hirayama, Hitoshi Ishibashi +8 more | 2009-02-17 |
| 7480473 | Image formation apparatus and process cartridge including a trickle development system and a cleanerless system | Nekka Matsuura, Satoshi Muramatsu, Atsushi Shinozaki | 2009-01-20 |